Added socks5 and http support to chain proxy

socks5 and http proxies can be added in this formats:

• socks://address:port or http://address:port
• socks://user:pass@address:port or http://user:pass@address:port

Clash and Sing-box configs now support Chain Proxy

From now on Clash and Sing-box normal subscriptions support Chain proxy in addition to fragment sub.

[!NOTE] The chain proxy is now added to normal subscription as a config, you can manually chain it with normal subscription. In Nekobox, Husi... you can set it as Landing Proxy in Group settings. In v2rayNG (1.9.1 or higher) you can set it as Next Proxy by copy pasting its remark in subscription settings.

[!CAUTION] If you wanna use VLESS TLS config as a chain proxy, be aware that it should be on port 443, otherwise panel will prevent submitting it.

[!CAUTION] Clash core doesn't support randomized fingerprint, so please avoid using configs with mentioned fingerprint as chain proxy if you wanna use Clash.

Improvements

• Added Tun and Sniffer to Clash config.
• Totally revised Clash DNS, Routing.
• Revised Xray DNS and routing in order to better support chain proxies in Local DNS mode and VPN DNS mode.
• Blocked UDP:443 on all VLESS/Trojan configs to prevent WebRTC leaks (Clash) and worker errors. Block QUIC option still applies on Warp subscriptions.

Bug Fixes

• Fixed importing Trojan normal configs failure if Trojan Password contained special characters.
• Panel prevents submitting VLESS TLS on port 443 for chain proxy.
• Sing-box sniffing limited to routing only.